package sanri.utils;

import java.text.DecimalFormat;

public class StringUtilsExtend {

    /**
     * 将数据大小转换成人可识别的值
     * @param size
     * @return
     */
    public static String readableFileSize(long size) {
        if (size <= 0) return "0";
        final String[] units = new String[]{"B", "KB", "MB", "GB", "TB"};
        int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
        return new DecimalFormat("#,##0.#").format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
    }
}
